Current set-up in my 54 with 58 engine is a 6V foot starter , but truck is converted to 12V. In completing my switch to 12V key start I will get a starter from my LAPS, and switch ring gears. One vendor has 168 tooth and 153 tooth units, but no mention of 6 vs 12V. Another vendor has a gear to fit 55-59 trucks, but no mention of no. of teeth. In my notes I have written 139 tooth flywheel, but no further info. What do I order with full confidence it is the correct one?
